OPAQUE: Password Authentication That Never Sends the Password
OPAQUE is a new password authentication protocol that enhances security by ensuring the server never sees the user's password. It addresses vulnerabilities in traditional login methods by using an augmented password-authenticated key exchange (aPAKE) system. This innovative approach protects user credentials even if the server is compromised.
- ▪The standard login method exposes passwords to servers, which can lead to security breaches.
- ▪OPAQUE allows the client to prove knowledge of the password without revealing it to the server.
- ▪The protocol consists of two phases: registration and login, ensuring that the server never stores the actual password.
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Record
| Original publisher | DEV.to (Top) |
| Canonical URL | https://dev.to/havenmessenger/opaque-password-authentication-that-never-sends-the-password-3nj4 |
| Publication time | Mon, 18 May 2026 08:18:27 +0000 |
| Retrieval time | 2026-05-18T08:34:56.132Z |
| Last seen | 2026-05-18T08:34:56.132Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | ve5kt1DxT2Bf |
| Cluster logic | Grouped by semantic title/content similarity across sources within a rolling window. Same-publisher template collisions are excluded from coverage comparison. |
| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
| Substitutes article? | No — link-out required for full text |
Rights status (four layers)
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| Indexing | May the item be indexed (stored, ranked, made findable)? | Allowed |
| Snippet | May a short excerpt of the publisher's text be shown? | Allowed |
| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
Opening excerpt (first ~120 words) tap to expand
try { if(localStorage) { let currentUser = localStorage.getItem('current_user'); if (currentUser) { currentUser = JSON.parse(currentUser); if (currentUser.id === 3891528) { document.getElementById('article-show-container').classList.add('current-user-is-article-author'); } } } } catch (e) { console.error(e); } Haven Messenger Posted on May 18 • Originally published at havenmessenger.com OPAQUE: Password Authentication That Never Sends the Password #security #cryptography #encryption #privacy The standard way to log in — type a password, send it to the server, hope the server hashes it well — has a structural flaw nobody has been able to fix without changing the protocol. OPAQUE changes the protocol.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at DEV.to (Top).
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